Property, Plant, and Equipment (Summary of Property by Classification) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	$ 37,274	$ 39,346
Accumulated depreciation and amortization	(9,105)	(10,579)
Net property, plant, and equipment	28,169	28,767
DTE Vantage
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	1,075	1,059
Accumulated depreciation and amortization	(479)	(469)
Other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	234	179
Accumulated depreciation and amortization	(66)	(61)
DTE Electric
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	27,936	30,591
Accumulated depreciation and amortization	(6,570)	(8,095)
Net property, plant, and equipment	21,366	22,496
DTE Electric | Nuclear
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	3,812	3,684
Accumulated depreciation and amortization	(479)	(428)
DTE Electric | Renewables
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	3,074	2,567
Accumulated depreciation and amortization	(524)	(426)
DTE Electric | Fossil and other generation
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	4,157	8,789
Accumulated depreciation and amortization	(1,393)	(3,352)
DTE Electric | Distribution
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	13,673	12,502
Accumulated depreciation and amortization	(3,205)	(3,040)
DTE Electric | Other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	3,220	3,049
Accumulated depreciation and amortization	(969)	(849)
DTE Gas
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	8,029	7,517
Accumulated depreciation and amortization	(1,990)	(1,954)
DTE Gas | Distribution
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	5,838	5,376
Accumulated depreciation and amortization	(1,365)	(1,330)
DTE Gas | Storage
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	578	607
Accumulated depreciation and amortization	(132)	(163)
DTE Gas | Transmission and other
Property, Plant, and Equipment [Line Items]
Property, plant, and equipment	1,613	1,534
Accumulated depreciation and amortization	$ (493)	$ (461)